Beautiful Dvar torah, Baal Habooze.
Thought on Parshas Bo.
Paroh: Who is going out [to serve Hashem?]
Moshe: With our children and elders we will go!
Paroh: Only the men can go, for that is what you seek.
Rashi explains that Moshe’s words always implied that only the men were going, as Paroh said.
Why did Moshe change the terms in middle.
The answer is that a Yid’s avoda is a link in an eternal chain. It is always flanked by both the previous generation, their exalted level of avoda, and the next generation, whose young eyes carefully observe the parents and rabbeim, giving them a sense of what true avoda means. Moshe was not changing his position, he merely clarified it.